Longman Dictionary of Contemporary English homepage

Topic: PLASTICS

Date: 1900-2000
Origin: poly- + styrene type of chemical compound (19-21 centuries) (from Latin styrax type of plant)

polystyrene

noun
     
pol‧y‧sty‧rene [uncountable]
British EnglishHCP a soft light plastic material that prevents heat or cold from passing through it, used especially for making containers [= Styrofoam]
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